The man who is bored with the Oregon State Fair is the man who is bored with life itself. Fact.
Yes, I'm aware that it's not actually in Portland.
August 22nd - September 1st, 2014
For some reason which is completely opaque to me, a lot of Portlanders seem to be very sniffy about the State Fair. This is their loss but your gain, as I-5 remains clear and you can get there in an hour. You can easily spend an entire day at the fair and still only experience a fraction of what it has to offer. This includes:
2330 17th Street NE, Salem, OR [Google map].